JP2008198366A - Cutter device and lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutter device 18 with the number of driving parts reduced and capable of being simplified and downsized. <P>SOLUTION: A pair of cutter units 35 are structured of a cutter 38, a cutter support disc 39, and a cutter action disc 40, and a plurality of pairs of the cutter units 35 are coaxially arranged in free rotation. The cutter support disc 39 and the cutter action disc 40 of each cutter unit are to be driven to individually rotate by a rotating drive part 57. If a relative rotation angle between the cutter support disc 39 and the cutter action disc 40 is changed, the cutter 38 is moved back and forth against a light path. If both the cutter support disc 39 and the cutter action disc 40 are rotated in the same direction at the same time, an angle at which the cutter 38 shields the light path is made changed. If the cutter support discs 39 and the cutter action discs 40 of all the cutter units 35 are made to rotate in the same direction at the same time, the cutters 38 of all the cutter units 35 are made to rotate in the same direction at the same time around the light path. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cutter device that creates a projected image of various shapes, and an illumination device that uses the cutter device.

  Conventionally, spotlights such as moving lights and remote control lights are used as lighting devices for stage and studio lighting, etc. In various shapes with a cutter device that receives light from the light source and is placed on the optical path in the optical system. The projected image formed in (1) can be projected by an optical system.

  In the cutter device, a circular opening serving as an optical path of the optical system is formed at the center of the disk, and four cutters that can advance and retreat into the opening are arranged around the opening on one side of the disk. A projection image of various shapes can be formed by a combination of the angle of the cutter and the amount of insertion into the optical path.

  Some of such cutter devices can be remotely operated so as to control the cutter by driving a motor for the purpose of improving the efficiency of lighting and providing effects. To control the angle and insertion amount of all four cutters, two cutters are required for each cutter: a motor that controls the cutter angle and a motor that controls the insertion amount of the cutter. If four cutters are provided, eight motors are required. These eight motors are attached to the disk.

Furthermore, in order to rotate the projected image, a ninth motor that rotates the entire disk while four cutters are fixed to the disk is required (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 7-320501 (page 3, FIG. 1)

  However, in the conventional cutter device, in order to rotate the projected image, a ninth motor that rotates the entire disk while fixing the four cutters to the disk is required. Needs to use a high torque motor to rotate the entire disk with 8 motors attached. In addition, such a motor becomes larger, and a driver for controlling the drive of the 9th motor A controller or the like is also required, and there is a problem that the cutter device becomes large.

  This invention is made | formed in view of such a point, and it aims at providing the cutter apparatus which can reduce the number of drive parts, can be simplified and reduced in size, and the illuminating device using this cutter apparatus.

  The cutter device according to claim 1 is a cutter that blocks an optical path, a cutter support disk that is formed with an opening serving as an optical path at a central portion and supports the cutter so as to be movable back and forth, and rotates coaxially with the cutter support disk. A plurality of cutter units each having a cutter operation disk that can be overlapped and move the cutter forward and backward relative to the optical path in accordance with a relative rotation angle with respect to the cutter support disk; and a cutter support disk and a cutter operation disk of the plurality of cutter units, respectively A rotation support unit that rotatably supports the same axis; and a rotation drive unit that individually rotates and drives the cutter support disk and the cutter operation disk of each cutter unit.

  The optical path indicates, for example, a portion through which light in the optical system passes.

  For example, the cutter is pivotally supported by the cutter support disk and the cam groove provided in the cutter is engaged with a pin or the like protruding from the cutter operation disk, so that the cutter support disk and the cutter operation disk are engaged. It is possible to move forward and backward with respect to the optical path in accordance with a change in relative rotation angle.

  The cutter support disk and the cutter operation disk are, for example, a cutter support disk that is exposed from a large opening of the cutter operation disk by combining the cutter operation disk with an opening larger than the opening of the cutter support disk so as to be rotatable relative to each other. The cutter can be supported on the part. You may provide the gear in which a rotational force is transmitted from a rotation drive part in the peripheral part of a cutter support disk and a cutter operation | movement disk.

  For example, the rotation support part can support each disk stably and rotatably by individually supporting three or more circumferential positions of each disk so that the outer periphery of each disk can rotate. When a pulley or the like is used and the outer peripheral portion of each disk is formed in a gear, a pulley with a gear that meshes with each disk is used.

  For example, a motor is used as the rotation drive unit, and the rotation drive of the motor is transmitted to each disk via a rotation transmission member engaged with the outer periphery of the disk. When the outer peripheral part of each disk is formed in a gear, a gear that meshes with each disk is used as a rotation transmitting member.

  The relative rotation angle between the cutter support disk of the cutter unit and the cutter operation disk is changed, whereby the cutter of the cutter unit is moved back and forth with respect to the optical path, and the cutter support disk and cutter operation of the cutter unit are also moved. By rotating the disks simultaneously in the same direction, the angle at which the optical path is blocked by the cutter of the cutter unit is adjusted. Further, the cutter support disks and the cutter operation disks of all the cutter units are simultaneously rotated in the same direction, so that the cutters of all the cutter units are simultaneously rotated in the same direction around the optical path. Conventionally, eight motors are mounted on the mechanism that rotates the entire disk, and the rotation angle is limited by the influence of the motor control lines, etc., so it is difficult to rotate it virtually endlessly over 360 °. However, in this mechanism, the cutter can be rotated endlessly by 360 ° or more around the optical path. When this cutter device is combined with an illumination device, the projected image formed by the cutter that blocks the optical path is small while rotating. The lighting effect can be enhanced.

  The cutter device according to claim 2 is a cutter that interrupts the optical path, a cutter support disk that is formed with an opening serving as an optical path in the center and supports the cutter so as to be movable forward and backward, and rotates coaxially with the cutter support disk. A plurality of cutter units each having a cutter operation disk that can be overlapped and move the cutter forward and backward relative to the optical path in accordance with a relative rotation angle with respect to the cutter support disk; and a cutter support disk and a cutter operation disk of the plurality of cutter units, respectively A rotation support unit that rotatably supports the same axis; a rotation drive unit that rotationally drives a cutter operation disk of each cutter unit; and a cutter support disk and a cutter operation disk that rotate the cutter of each cutter unit around the optical path; When the cutter is moved forward and backward relative to the optical path, Those that include a; and connection switching driving unit for rotatable only cutter motion disc to release the connection between the cutter support disk and the cutter operation disk to.

  For example, an electromagnet or a solenoid is used for the connection switching drive unit.

  Then, the connection between the cutter support disk of the cutter unit and the cutter operation disk is released, and only the cutter operation disk is rotated, so that the cutter moves forward and backward with respect to the optical path, and the cutter support disk of the cutter unit When the cutter operation disk is connected and the cutter support disk and the cutter operation disk are rotated together, the angle of the cutter unit that blocks the optical path of the cutter is adjusted. The cutter supporting disks and the cutter operation disks of all the cutter units are simultaneously rotated in the same direction, so that the cutters of all the cutter units are simultaneously rotated in the same direction around the optical path.

  The illumination device according to claim 3 is a light source; an optical system that projects light from the light source; and an optical system that is disposed on an optical path in the optical system and forms a projected image projected by the optical system. Or the cutter apparatus of 2 is provided.

  As the light source, for example, a lamp such as a halogen lamp or a short arc discharge lamp, a light emitting diode, or the like is used.

  The optical system uses, for example, an optical component such as a reflecting mirror or a lens, and forms and projects a projected image in which light from the light source passes through the cutter device.

  According to the cutter device of claim 1, by changing the relative rotation angle between the cutter support disk of the cutter unit and the cutter operation disk, the cutter of the cutter unit can be moved forward and backward with respect to the optical path, In addition, by simultaneously rotating the cutter support disk and cutter operation disk of the cutter unit in the same direction, the angle at which the light path is blocked by the cutter of the cutter unit can be adjusted, and the cutter support disks and cutter operation disks of all the cutter units are the same. By rotating in the direction at the same time, the cutters of all cutter units can be rotated in the same direction around the optical path at the same time, so there is no need for a dedicated rotation drive to rotate the cutters of all the cutter units simultaneously. , Reduce the number of rotary drive parts, It can be iodinated and miniaturization. In addition, the cutter can be rotated 360 degrees or more around the optical path in an endless manner. For example, when this cutter device is combined with an illumination device, the projected image formed by the cutter that blocks the optical path is rotated and made smaller or larger. It is possible to enhance the lighting effect.

  According to the cutter device according to claim 2, the cutter of the cutter unit is moved forward and backward with respect to the optical path by releasing the connection between the cutter support disk of the cutter unit and the cutter operation disk and rotating only the cutter operation disk. In addition, by connecting the cutter support disk of the cutter unit and the cutter operation disk and rotating the cutter support disk and the cutter operation disk together, the angle at which the light path is blocked by the cutter of the cutter unit is adjusted. In addition, by simultaneously rotating the cutter support disk and cutter operation disk of all cutter units in the same direction, the cutters of all cutter units can be simultaneously rotated in the same direction around the optical path. Rotate the unit cutters simultaneously Rotary drive of the dedicated without, can reduce the number of rotary drive unit, can be simplified and downsized.

  According to the illumination device of the third aspect, since the cutter device of the first or second aspect is used, it can be configured in a small size.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 to FIG. 6 show a first embodiment, FIG. 1 is a front view showing a state in which the cutter of the cutter device is retracted from the optical path, FIG. 2 is a plan view in which a part of the cutter device is cut away, and FIG. Is a sectional view of one cutter unit of the cutter device in a disassembled state seen from the plane direction, FIG. 4 is a rear view of one cutter unit of the cutter device, and FIG. 5 is a front view of the cutter device with the cutter entering the optical path. FIG. 6 and FIG. 6 are configuration diagrams of an illumination device using a cutter device.

  In FIG. 6, reference numeral 11 denotes an illumination device such as a moving light used for illumination of a stage or a studio, or a spotlight including a remote control light. The illumination device 11 has an illumination device body 12, and this illumination device A projection opening 13 for projecting light is formed on the front surface of the main body 12.

  In the illuminating device body 12, a light source 15 that emits white light, an optical system 16 that projects light from the light source 15 to the outside from the projection opening 13, and a circular shape that forms a projection circle centered on the optical axis 16a The aperture device 17 is an aperture 17 and the cutter device 18 that arbitrarily changes the shape of the projection circle projected by the optical system 16 through the aperture 17, and the color that converts the color of the light projected by the optical system 16 A conversion device 19 is provided.

  The light source 15 is, for example, a halogen lamp having a light emitting portion 15a that is a filament, and the light emitting portion 15a is disposed on the optical axis 16a of the optical system 16.

  Further, the optical system 16 has a reflecting mirror 21 that condenses the light of the light source 15 with the light emitting portion 15a as a focal point, a lens group 22 that makes the light of the light source 15 approximately parallel light parallel to the optical axis 16a, and approximately parallel light. It has a reflecting mirror 23 that converts the optical axis 16a of light by 90 ° toward the projection opening 13 and has an infrared transmission function, and lens groups 24 and 25 for projection. In general, light is emitted directly from the light emitting portion 15a toward the light projection opening 13, but the reflection mirror 23 having an infrared transmission function separates the heat component by converting it by 90 °, and the cutter of the cutter device 18 It is possible to reduce the heat applied to the mechanism portion and protect the electronic components on the unit.

  A cutter device 18 is disposed between the reflecting mirror 23 and the lens group 24, and a color conversion device 19 is disposed between the lens groups 24 and 25. Some lenses in the lens groups 24 and 25 for projection move in the optical axis direction, and the size and focus of the projection circle can be adjusted.

  Next, as shown in FIG. 1 and FIG. 2, the cutter device 18 has a pair of plate-like bases 31, and a circular disc presser 32 protruding in a direction approaching each other at the center of the bases 31. A circular aperture 17 serving as an optical path is formed at the center of the disk pressing portion 32. The pair of bases 31 are connected and fixed to each other by a plurality of connecting members 33 arranged around the base 31.

  A plurality of, for example, four sets of cutter units 35 are arranged between the pair of bases 31, and these four sets of cutter units 35 can be rotated while being coaxially overlapped around the optical axis 16a. A plurality of rotation support portions 36 are provided to be supported.

  As shown in FIGS. 1 to 4, each cutter unit 35 is coaxial with the cutter 38 that blocks the optical path, the cutter support disk 39 that supports the cutter 38 so as to be movable back and forth, and the cutter support disk 39. And a cutter operation disk 40 which is overlapped so as to be rotatable and moves the cutter 38 forward and backward with respect to the optical path in accordance with a relative rotation angle with respect to the cutter support disk 39.

  The cutter support disk 39 is formed with a circular opening 41 having a diameter slightly larger than the aperture 17 at the center, and an annular guide ring part 42 around the opening 41 on one side facing the cutter operation disk 40. Or it is provided integrally. A stepped portion 43 is formed in the vicinity of the peripheral portion of the cutter support disk 39, and an annular gear 44 is attached to the other side opposite to the one side facing the cutter operating disk 40 outside the stepped portion 43. ing. The teeth of the gear 44 protrude from the outer periphery of the cutter support disk 39.

  The cutter operation disk 40 has an opening 45 that is rotatably engaged around the guide ring part 42 of the cutter support disk 39 at the center. A stepped portion 46 is formed in the vicinity of the peripheral portion of the cutter operation disk 40, and an annular gear 47 is attached to the other side facing the cutter support disk 39 outside the stepped portion 46. The tooth portion of the gear 47 protrudes from the outer peripheral portion of the cutter operation disk 40.

  The cutter 38 has a flat plate shape, and a linear cutter portion 48 that blocks the optical path is formed on one side, and a position in the vicinity of the cutter portion 48 rotates around the support shaft 49 on one side surface of the guide ring portion 42 of the cutter support disk 39. It is pivotally supported. The cutter 38 is supported so as to be swingable about the support shaft 49 with respect to the cutter support disk 39, and can move forward and backward with respect to the optical path by the swing.

  The cutter 38 is formed with a cam groove 50 which is a long hole, and a pin 51 protruding from one side of the cutter operation disk 40 is engaged with the cam groove 50 so as to be movable in the cam groove 50. Then, as shown in FIG. 1, the cutter operation disk 40 is rotated in one direction relative to the cutter support disk 39, so that the cutter 38 is retracted from the optical path. On the other hand, as shown in FIG. When the cutter operation disk 40 rotates in the other direction relative to the support disk 39, the cutter 38 enters the optical path.

  The cutter operation disk 40 is provided with a stopper 52 that abuts and stops at a position where the cutter 38 is retracted from the optical path.

  In FIG. 1 and FIG. 5, only one cutter 38 is indicated by a broken line, but three other cutters 38 are similarly arranged.

  As shown in FIG. 2, of the four sets of cutter units 35, two sets of cutter units 35 are overlapped with one side and the other side being different in direction. In the state where these four sets of cutter units 35 are superposed, the cutter 38 of the cutter unit 35 and the central area of each of the disks 39, 40 are arranged close to each other. The gears 44 and 47 on the outer peripheral portions of the disks 39 and 40 are arranged with an interval in the overlapping direction via 46.

  The rotation support portion 36 has a shaft portion 54 attached to the base 31, and eight pulleys with which the shafts 54 engage the gears 44 and 47 of the disks 39 and 40 of all the cutter units 35. Each 55 is rotatably mounted. Each pulley 55 is provided with a flange that slidably engages on both sides of each gear 44, 47, and the engaged state between each pulley 55 and each gear 44, 47 is maintained.

  The rotation support part 36 is arrange | positioned at three places of the circumferential direction of the cutter unit 35, and supports the cutter unit 35 rotatably in these 3 points | pieces.

  One base 31 is provided with eight rotation driving portions 57 that individually rotate and drive the disks 39 and 40 of the cutter units 35, respectively.

  Each rotation drive unit 57 has a gear 58 that meshes with the gears 44 and 47 of the corresponding disks 39 and 40, and this gear 58 is attached to a drive shaft 60 of a motor 59 attached to the base. The gear 58 is provided with flanges that are slidably engaged on both sides of the gears 44 and 47, and the meshing state between the gears 58 and the gears 44 and 47 is maintained.

  As shown in FIG. 1 and FIG. 2, four rotation drive units 57 for individually rotating the disks 39 and 40 of the two sets of cutter units 35 on one side are arranged on one side of the cutter unit 35 in the base 31. At the other side position, four rotation driving units 57 for individually rotating the respective discs 39 and 40 of the two sets of cutter units 35 on the other side are arranged.

  Next, the operation of the first embodiment will be described.

  As shown in FIG. 6, when the light source 15 is turned on, the light emitted from the light emitting unit 15 a is reflected by the reflecting mirror 21, enters the lens group 22, is reflected by the reflecting mirror 23, the cutter device 18, and the aperture 17. The light is projected from the light projection opening 13 of the illuminating device body 12 through the lens group 24, the color conversion device 19 and the lens group 25.

  In the cutter device 18, if the cutter 38 is retracted from the optical path of the optical system 16, a projection circle corresponding to the shape of the aperture 17 is projected, and if the cutter 38 enters the optical path of the optical system 16, for example, a triangle A light having an arbitrary shape such as is projected.

  In the color conversion device 19, it is converted into a set color and projected.

  Next, the operation of the cutter device 18 will be described.

  In the state of FIG. 1, by rotating the cutter operation disk 40 clockwise relative to the cutter support disk 39, the pin 51 rotates clockwise as shown in FIG. The cutter 38 moves into the optical path through the engaging cam groove 50 to block the light.

  In the state of FIG. 5, by rotating the cutter operation disk 40 counterclockwise relative to the cutter support disk 39, the pin 51 rotates counterclockwise as shown in FIG. The cutter 38 moves toward the outside of the optical path through the cam groove 50 that engages 51, and does not block the light.

  Note that the cutter 38 can be similarly moved forward and backward with respect to the optical path by rotating the cutter support disk 39 with respect to the cutter operation disk 40.

  Thus, by changing the relative rotation angle between the cutter support disk 39 of the cutter unit 35 and the cutter operation disk 40, the cutter 38 of the cutter unit 35 can be moved forward and backward with respect to the optical path.

  Further, by simultaneously rotating the cutter support disk 39 and the cutter operation disk 40 of the cutter unit 35 in the same direction, the angle at which the cutter 38 rotates around the optical path and the optical path is blocked by the cutter 38 can be adjusted.

  Further, by simultaneously rotating the cutter support disk 39 and the cutter operation disk 40 of all the cutter units 35 in the same direction, the cutters 38 of all the cutter units 35 are simultaneously rotated in the same direction around the optical path, and the projected image is obtained. Can be rotated.

  At this time, since the cutter 38 can be rotated 360 degrees or more around the optical path, the projected image can be reduced or enlarged while rotating the projected image formed by the cutter 38 that blocks the optical path. The lighting effect can be enhanced.

  Thus, a dedicated rotation drive unit is not required to rotate the cutters 38 of all the cutter units 35 at the same time, the number of rotation drive units can be reduced, and simplification and miniaturization can be achieved.

  Next, FIG. 7 to FIG. 10 show a second embodiment, FIG. 7 is a front view of the cutter device with the cutter retracted from the optical path, and FIG. 8 is a standby state of one cutter unit of the cutter device. FIG. 9 is a plan view showing a state in which the cutter of one cutter unit of the cutter device is advanced and retracted with respect to the optical path, and FIG. 10 is a plan view showing a state in which the entire cutter unit of the cutter device is rotated.

  The cutter unit 35 is fixed to the base 31 or the like so as to face the other side opposite to the one side of the cutter supporting disk 39 opposite to the cutter operating disk 40 together with the cutter 38, the cutter supporting disk 39 and the cutter operating disk 40. A fixed plate 65 is provided.

  The cutter support disk 39 is not provided with the gear 44, and only the cutter operation disk 40 is provided with the gear 47. Therefore, the rotation drive unit 57 is only for the cutter operation disk 40 and is provided for each cutter unit 35.

  On one side and the other side of the cutter support disk 39, electromagnets 66 and 67 as connection switching drive units are attached, and these electromagnets 66 and 67 are on / off controlled by a control unit 69 connected via a wiring 68. These electromagnets 66 and 67 attract and connect the cutter operation disk 40 and the fixed plate 65 by ON control, and release the connection with the cutter operation disk 40 and the fixed plate 65 by OFF control.

  FIG. 8 shows a standby state in which the electromagnets 66 and 67 are turned off. In this standby state, the electromagnets 66 and 67 are separated from the cutter operation disk 40 and the fixed plate 65.

  Also, as shown in FIG. 9, the electromagnet 67 is turned on to fix the cutter support disk 39 to the fixed plate 65, and the motor 59 is driven, so that the cutter operation disk 40 is moved relative to the fixed cutter support disk 39. The cutter 38 can be moved back and forth with respect to the optical path.

  Further, as shown in FIG. 10, the electromagnet 66 is turned on to fix the cutter support disk 39 and the cutter operation disk 40, and the motor 59 is driven so that the cutter support disk 39 and the cutter operation disk 40 are in the same direction. Since the cutter 38 is rotated around the optical path, the angle at which the cutter 38 blocks the optical path can be adjusted.

  Also, if both electromagnets 66 and 67 are turned on simultaneously, the position and angle of the cutter 38 can be fixed.

  In the configuration of the cutter device 18, only one motor 59 is required for one cutter unit 35. Since the number of motors 59 can be reduced, the drive circuit for controlling the drive of the motor 59 together with the motor 59 itself can be reduced. Thereby, the cutter device 18 can be miniaturized, and the illumination device 11 can be miniaturized.

  Compared with the motor 59, the electromagnets 66 and 67 used in place of the single motor 59 are advantageous in that they are inexpensive and small in size and require only on / off control.

  In addition, since the electromagnets 66 and 67 attached to the cutter support disk 39 and the control unit 69 are connected by the wiring 68, the rotation angle of the cutter support disk 39 is limited. By using a slip ring and a brush that is in electrical contact with the slip ring, the limit of the rotation angle of the cutter support disk 39 can be eliminated, and the cutter 38 can be rotated endlessly by 360 ° or more around the optical path. .

It is a front view of the state where the cutter of the cutter device which shows a 1st embodiment of the present invention was evacuated from the optical path. It is the top view which notched a part of cutter apparatus same as the above. It is sectional drawing of the decomposition | disassembly state which looked at one cutter unit of the cutter apparatus same as the above from the plane direction. It is a rear view of one cutter unit of a cutter apparatus same as the above. It is a front view of the state which made the cutter of the cutter apparatus same as the above approach into an optical path. It is a block diagram of the illuminating device using a cutter apparatus same as the above. It is a front view of the state where the cutter of the cutter device which shows a 2nd embodiment of the present invention was evacuated from the optical path. It is a top view of the standby state of one cutter unit of a cutter apparatus same as the above. It is a top view of the state which advances / retreats the cutter of one cutter unit of a cutter apparatus same as the above with respect to an optical path. It is a top view of the state which rotates the whole one cutter unit of a cutter apparatus same as the above.

Explanation of symbols

11 Lighting equipment
15 Light source
16 optics
18 Cutter device
35 Cutter unit
36 Rotating support
38 Cutter
39 Cutter support disk
40 Cutter operation disk
41 opening
57 Rotation drive
66, 67 Electromagnet as a connection switching drive

Claims (3)

A cutter that blocks the optical path, an opening that becomes the optical path in the center, and a cutter support disk that supports the cutter so that it can move forward and backward. A plurality of cutter units having a cutter operation disk for moving the cutter forward and backward with respect to the optical path according to a specific rotation angle;
A rotation support portion for supporting the cutter support disks and the cutter operation disks of the plurality of cutter units so as to be rotatable coaxially;
A rotation drive unit that individually rotates and drives the cutter support disk and the cutter operation disk of each cutter unit;
A cutter apparatus comprising: A cutter that blocks the optical path, an opening that becomes the optical path in the center, and a cutter support disk that supports the cutter so that it can move forward and backward. A plurality of cutter units having a cutter operation disk for moving the cutter forward and backward with respect to the optical path according to a specific rotation angle;
A rotation support portion for supporting the cutter support disks and the cutter operation disks of the plurality of cutter units so as to be rotatable coaxially;
A rotation drive unit for rotating the cutter operation disk of each cutter unit;
When rotating the cutter of each cutter unit around the optical path, the cutter support disk and the cutter operation disk are connected together so as to be rotatable, and when moving the cutter forward and backward relative to the optical path, the cutter support disk and the cutter operation disk A connection switching drive unit that releases the connection and allows only the cutter operation disk to rotate;
A cutter apparatus comprising: With a light source;
An optical system that projects light from the light source;
The cutter device according to claim 1 or 2, wherein the cutter device is disposed on an optical path in the optical system and forms a projected image projected by the optical system;
An illumination device comprising:

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